Carbon dots as multifunctional additives: preparation, characteristics, and application prospects of food packaging and preservation

Carbon dots: a new option for multifunctional additives in food packaging. According to a review article published in the 58th volume of Food Packaging and Shelf Life in December 2026, authors Kai Fan, Boxin Li, and Yutian Wang systematically reviewed the preparation methods, characteristics, applications, and prospects of carbon dots as multifunctional additives in the field of food packaging and preservation. This article provides a reference for the packaging materials industry to understand the positioning of carbon dots as an emerging additive.

Overview of Preparation Methods and Characteristics

The review focuses on the preparation methods of carbon dots and summarizes their characteristics.

. As a multifunctional additive, the preparation pathway and characteristic performance of carbon dots are the basis for determining their feasibility in packaging materials. The article presents the preparation methods and characteristics as independent chapters, indicating that these two aspects are key prerequisites for understanding the application of carbon dot packaging.

Application in food packaging and preservation

The article further discusses the application of carbon dots in food packaging and preservation.

. As a multifunctional additive, carbon dots are examined in the context of food packaging and preservation, which is in line with the direction of food contact packaging, barrier and preservation functions that the packaging materials column focuses on. For packaging materials, the functional integration of additives is an important consideration in formula design, and the multifunctional properties of carbon dots provide new ideas for packaging formulas.

Significance for the polymer additive industry

From the perspective of the polymer additive industry, the introduction of carbon dots as multifunctional additives suggests that the selection space for functional additives in packaging material formulations may expand.

. In terms of processing stability, packaging resins need to maintain stable performance during the processing, and antioxidants and other processing stabilization additives are conventional configurations; If carbon dots enter the packaging formula, their coordination with existing additive systems is worth paying attention to. In the context of food contact, any newly added additives must be included in the food contact compliance assessment framework, which is an unavoidable step in the application of packaging materials. In addition, the use of recycled materials in packaging is increasingly being valued, and how multifunctional additives adapt to recycled material systems and whether they affect recyclable designs are also issues that the industry needs to continuously observe. The summarized preparation methods and characteristic information provide basic materials for the subsequent evaluation of the role of carbon dots in the above steps.

Prospects and Issues to be Observed

The article looks forward to the prospects of carbon dots in food packaging and preservation.

. It should be pointed out that the review presents a summary of research and application directions. The processing stability of carbon dots in actual packaging formulas, their synergistic effects with antioxidants and other additives, food contact compliance pathways, and their performance in recycled material systems still require specific research data support. When paying attention to this direction, the industry should start with the preparation and characteristic information of source literature, and carefully evaluate it in combination with its own formula and compliance requirements.

Information source:Carbon dots as a multifunctional additive: Preparation methods, characteristics, application and prospects in food packaging and preservation， Organized by Herun Chemical.